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General Contractor

Unnecessary waste of time within the tendering process is a thing of the past.

Subcontractor

Stand out in tender invitations and grow your network.

Supplier

Own your brand’s impact in the construction process.

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Create projects Manage documents and work items
Create and send requests

Link permanent and new parties to work items and send your requests.

Find existing and new parties Send offer requests
Manage and compare received bids

Ensure good communication in your bidding process.

Real-time overview of statuses Compare received bids
Greater visibility for your projects

Easily bring your project to the attention of subcontractors.

Give your project a stage with 12Build Publications
Supplier management
Manage your personal database

Company information and contact details always up-to-date.

Manage your trusted partners
Search regular and new parties in our Marketplace

Proven expertise in Europe's largest Marketplace.

Find the best subcontractors
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Receive, manage and respond to all quotation requests.

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Create the perfect quotation

Create a good quotation quickly with budget rules and stay in control.

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Attract the attention of general contractors

Provide relevant requests with a unique and complete company profile in the 12Build Marketplace.

Activate your company profile Boost your visibility
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View public projects from general contractors.

Easily respond to opportunities with 12Build Publications
Resources Resources
Blogs

If you want to enlarge your knowledge, or just looking for inspiration, then check out our blogs.

Customer stories

Our customers know us best. Read here what they think about 12Build.

Whitepapers

Knowledge should be shared. You can find our whitepapers here.

Take a look
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Building a transparent construction industry together.

Work at 12Build

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Contact

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2 minutes reading

Your data is yours. Period.

The rise of Generative AI triggers the same question for many: “If I feed my documents to an AI, who actually gets smarter in the end?” You hear the stories in the industry where corporate secrets surface in the answers of public chatbots because the model was trained on them.

At 12Build, we are very clear about this: We use AI to help you, not to make the rest of the world smarter. Your intellectual property and commercial data stay within your walls. Here is how our architecture guarantees that.

Will my calculation become public knowledge?

 Many free or low barrier AI tools operate on a data for services model. You get to use the tool, but in exchange, they use your input to improve their algorithms. In the construction industry, we believe this is unacceptable. You do not want your unique pricing strategy, your exclusions, or your clever alternatives indirectly ending up in the training set of a model that is later consulted by your competitor. 

The ‘privacy by design’ architecture

 We have not simply hooked up our AI engine, such as AI Quote Analysis or AI Project Fit, to the open internet. It is protected by a strict security shell that operates according to three principles. 

1.  Temporary processing, no third party storage: When our AI analyses a PDF from a subcontractor, we use the processing power of OpenAI. However, we do this via a shielded corporate API connection. This comes with a strict agreement that data is used exclusively for that specific action. No permanent storage occurs at the AI provider and your data is never used to train their public models. 

2.  Lightning fast indexing in your own environment (Qdrant): For deep analysis and document searching, we use Qdrant. This is a vector database that indexes information within your own secure environment. Think of it as a digital library to which only you have the key. It allows you to search through thousands of pages of quotes for one specific exclusion in seconds, without that information ever leaving your domain. 

3.  Full compliance with the EU AI Act: As a European platform, we are leading the way in adopting the EU AI Act. This means our systems are auditable and transparent. We minimize algorithmic bias and protect data privacy at the highest level, exactly what you should expect from a strategic partner. 

"The goal of AI at 12Build is 'human augmentation': empowering the professional, not replacing them or making their knwowledge public."

Your edge remains yours

AI is the new standard for efficiency in construction. It reduces failure costs, which average 11 percent of project budgets, by detecting risks in documents faster. But that efficiency gain is worthless if it comes at the expense of your information security.

By choosing a closed ecosystem where data ownership is legally and technically anchored, you maintain your strategic advantage. The smart alternatives you find in the market remain your secret. We provide the engine, you set the course, and you remain the owner of the fuel. 

Security is a foundation, not an option

 At 12Build, we are building the future of construction, but we do so on a foundation of trust. Your data is not shared, not reused for external training, and not commercialized to third parties. 

Your data is yours. Period.

Would you like to know more about the technical specifications of our AI security?